POTENTIOMETRIC MEASURING CHAIN AND METHOD FOR DETERMINING THE PH VALUE

摘要

The invention relates to a potentiometric rod-shaped measuring chain for determining the pH value, comprising a measuring half-cell with a measuring electrode (1) and a reference half-cell with at least one reference electrode (2). In order to be able to carry out a functional check of the measuring chain during the pH measurement, provision is made for a voltammetric measuring cell with a working electrode (4) and a counterelectrode (5) to be additionally provided for the purpose of checking the potential measurement of the measuring chain, wherein the voltammetric measuring cell is connected to a voltammetric evaluation unit.